diff --git a/.gitignore b/.gitignore
index 4daa342..a03f8d8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,5 @@
 .idea/
 cmd/mailgun/mailgun
 /.env
+
+/internal/types/redocly-mailgun/
diff --git a/Makefile b/Makefile
index 8756b1e..bf8fc34 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,7 @@
 
 PACKAGE := github.com/mailgun/mailgun-go
 GOPATH=$(shell go env GOPATH)
+TYPES_PATH=./internal/types
 
 NILAWAY = $(GOPATH)/bin/nilaway
 $(NILAWAY):
@@ -36,3 +37,15 @@ $(GOLINT):
 .PHONY: lint
 lint: $(GOLINT)
 	$(GOLINT) run
+
+# go install github.com/oapi-codegen/oapi-codegen/v2/cmd/oapi-codegen@latest
+#
+# mailgun/api-reference/openapi-final.yaml fails due to interface{} fields
+#	cd $(TYPES_PATH)/redocly-mailgun/docs/mailgun/api-reference/ && sed -i '' 's/openapi: 3.1.0/openapi: 3.0.0/' openapi-final.yaml
+#	oapi-codegen -config $(TYPES_PATH)/mailgun_cfg.yaml $(TYPES_PATH)/redocly-mailgun/docs/mailgun/api-reference/openapi-final.yaml
+.PHONY: gen-models
+gen-models:
+	cd $(TYPES_PATH) && git clone --depth 1 git@github.com:mailgun/redocly-mailgun.git
+	cd $(TYPES_PATH)/redocly-mailgun/docs/inboxready/api-reference/ && sed -i '' 's/openapi: 3.1.0/openapi: 3.0.0/' openapi-final.yaml
+	oapi-codegen -config $(TYPES_PATH)/inboxready_cfg.yaml $(TYPES_PATH)/redocly-mailgun/docs/inboxready/api-reference/openapi-final.yaml
+	rm -rf $(TYPES_PATH)/redocly-mailgun
diff --git a/internal/types/inboxready_cfg.yaml b/internal/types/inboxready_cfg.yaml
new file mode 100644
index 0000000..03de987
--- /dev/null
+++ b/internal/types/inboxready_cfg.yaml
@@ -0,0 +1,6 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/oapi-codegen/oapi-codegen/HEAD/configuration-schema.json
+package: types
+output: ./internal/types/inboxready.gen.go
+generate:
+  models: true
+  client: false
diff --git a/internal/types/mailgun_cfg.yaml b/internal/types/mailgun_cfg.yaml
new file mode 100644
index 0000000..3250c1c
--- /dev/null
+++ b/internal/types/mailgun_cfg.yaml
@@ -0,0 +1,6 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/oapi-codegen/oapi-codegen/HEAD/configuration-schema.json
+package: types
+output: ./internal/types/mailgun.gen.go
+generate:
+  models: true
+  client: false